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1/57 www.rohm.com 2012.03 - rev. a ? 2012 rohm co., ltd. all rights reserved. digital sound processors for fpd tvs 32bit audio dsp bu9414fv general description this lsi is the digital sound processor which made the use digital signal processing for fpd tvs. dsp of rohm original is used for the tv sound pr ocessor unit, and it excels in cost performance. there are two digital input systems. an output is a digital output corresponding to 2.1ch. features digital signal processor unit word length: 32bit (data ram) the fastest machine cycle: 40.7ns (512fs, fs = 48khz) multiplier: 32 x 24 56bit adder: 32 + 32 32bit data ram: 256 x 32bit coefficient ram: 128 x 24bit sampling frequency: fs = 48khz master clock : 512fs (it is a slave to 256fs of fs = 48khz, 44.1 khz, and 32 khz) digital signal input (stereo 2 lines): 16 /20/24bit(i2s, left-justif ied, right-justified) digital signal output (stereo 2 lines): 16/20/24b it(i2s, left-justified, right-justified, s/pdif) the sound signal processing function for fpd tvs pre-scaler, dc cut hpf, channel mixer, p 2 volume(perfect pure volume), bass, middle, treble, pseudo bass, surround, p 2 bass, p 2 treble, 7band parametric eq, master volume, l/r balance, post -scaler, output signal clipper (p 2 volume, p 2 bass, and p 2 treble are the sound effect func tions of rohm original.) applications flat panel tvs (lcd, plasma) no.12083eat04
technical note 2/57 bu9414fv www.rohm.com 2012.03 - rev. a ? 2012 rohm co., ltd. all rights reserved.
technical note 3/57 bu9414fv www.rohm.com 2012.03 - rev. a ? 2012 rohm co., ltd. all rights reserved. ? ?
technical note 4/57 bu9414fv www.rohm.com 2012.03 - rev. a ? 2012 rohm co., ltd. all rights reserved. 39 12 25 26 2 3 4 5 6 7 8 9 10 11 13 14 15 33 32 31 30 29 28 34 bcko mutex_daco sdao lrcko sdatao1 sdatao2 sclo sdata1 sdata2 resetx mutex_dac scli sdai vss dvddcore reg15 ldopoff vdd pllfil vss mclk spdifo 35 sysclko 1 bcki 37 40 38 36 27 resetxo vss3 mode anatest 16 mutex_sp i2s if control if i2c if ldo15 plla dsp clk test sp conv. mutex_spo 17 18 19 20 24 23 22 21 lrcki n.c. n.c. n.c. n.c. n.c. n.c. addr n.c. n.c.
technical note 5/57 bu9414fv www.rohm.com 2012.03 - rev. a ? 2012 rohm co., ltd. all rights reserved.
technical note 6/57 bu9414fv www.rohm.com 2012.03 - rev. a ? 2012 rohm co., ltd. all rights reserved.
technical note 7/57 bu9414fv www.rohm.com 2012.03 - rev. a ? 2012 rohm co., ltd. all rights reserved. 1.command interface i 2 c bus method is used in command interface with host cpu on bu9414fv. in bu9414fv, not only writing but read-out is possible except for some registers. besides the slave address in bu9414fv, one byte sele ct address can be specified, written and readout. the format of i 2 c bus slave mode is shown below. msb lsb msb lsb msb lsb s slave address a select address a data a p s: start condition slave address: putting up the bit of read mode (h") or write mode (l") after slave address (7bit) set with addr, the data of eight bits in total will be sent. (msb first) a: the acknowledge bit in each byte adds into the data when acknowledge is sent and received. when data is correctly sent and received, "l" will be sent and received. there was no acknowledge for "h". select address: 1 byte select addre ss is used in bu9414fv. (msb first) data: data-byte, data(msb first)sent and received p: stop condition 1 1 - - 1 1 . . d d a a t t a a w w r r i i t t i i n n g g s slave address a select address a data a p : from master to slave : from slave to master addr=0 msb
technical note 8/57 bu9414fv www.rohm.com 2012.03 - rev. a ? 2012 rohm co., ltd. all rights reserved. writing procedure step clock master slave(bu9414fv) note 1 start condition 2 7 slave address &h80 (&h82) 3 1 r/w (0) 4 1 acknowledge 5 8 select address writi ng object register 8 bit 6 1 acknowledge 7 8 data writing data 8 bit 8 1 acknowledge 9 stop condition - the select address add +1 by auto increment function when the data is transferred continuously.
technical note 9/57 bu9414fv www.rohm.com 2012.03 - rev. a ? 2012 rohm co., ltd. all rights reserved. 1-3. control signal specification
technical note 10/57 bu9414fv www.rohm.com 2012.03 - rev. a ? 2012 rohm co., ltd. all rights reserved. 2.switching of data and clock i/o system chart of bu9414fv audio data is shown below. bu9414fv has 2 digital stereo input and 3 digita l stereo output with the same sampling rate. output from dsp operation part is converted into i 2 s mode digital output or s/pdif mode digital serial output. system clock uses master clock input from mclk terminal, makes 512fs multiplying clock in pll block. moreover, 256fs synchronous clock can be output from terminal sysclko, and the clo ck is supplied to external dac or d class sp amplifier. spdifo and output data selection of sdat ao1 and sdatao2 should unify the dsp proc essing after (post) or processing before (pre) with all outputs. 2 2 - - 1 1 . . s s - - p p c c o o n n v v e e r r s s i i o o n n 1 1 i i n n p p u u t t d d a a t t a a s s e e l l e e c c t t i i o o n n ( ( s s e e l l 1 1 ) ) default = 0 select address value operating description &h03 [ 0 ] 0 input data from sdata1 1 input data from sdata2 2 2 - - 2 2 . . s s - - p p c c o o n n v v e e r r s s i i o o n n 2 2 i i n n p p u u t t d d a a t t a a s s e e l l e e c c t t i i o o n n ( ( s s e e l l 1 1 ) ) default = 0 select address value operating description &h03 [ 4 ] 0 input data from sdata1 1 input data from sdata2 2 2 - - 3 3 . . o o u u t t p p u u t t d d a a t t a a s s e e l l e e c c t t i i o o n n ( ( s s e e l l 2 2 ) ) t t o o p p - - s s c c o o n n v v e e r r s s i i o o n n 1 1 d class amp output (main sp) optical output bass treble control i/f i2c reset mclk_ div s-p conversi on1 sdata1 evr plla audio dsp (bu9414fv) p-s convers ion2 sdatao1(main) p-s convers ion3 spdifo sysclko (256fs) func. main digital input1 digital input2 sdata2 p-eq s-p conversi on2 p-s convers ion1 sdatao2(sub) d class amp output (sub woofer) dsp clk (512fs) mode addr ??? sub main main sub plla_ div mclk sel1 sel3 sel2
technical note 11/57 bu9414fv www.rohm.com 2012.03 - rev. a ? 2012 rohm co., ltd. all rights reserved. 2 2 - - 4 4 . . o o u u t t p p u u t t d d a a t t a a s s e e l l e e c c t t i i o o n n ( ( s s e e l l 2 2 ) ) t t o o p p - - s s c c o o n n v v e e r r s s i i o o n n 2 2
technical note 12/57 bu9414fv www.rohm.com 2012.03 - rev. a ? 2012 rohm co., ltd. all rights reserved. 3. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 16bit 20bit 24bit 16bit 20bit 24bit lrcki bcki datai iis? 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 16bit 20bit 24bit 16bit 20bit 24bit lrcki bcki datai ?? 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 16bit 20bit 24bit lrcki bcki datai ?? 16bit 20bit 24bit 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 16bit 20bit 24bit lrcko bcko datao 48fs 16bit 20bit 24bit msb lsb s msb lsb s msb lsb s msb lsb s msb lsb s msb lsb s msb lsb s msb lsb s
technical note 13/57 bu9414fv www.rohm.com 2012.03 - rev. a ? 2012 rohm co., ltd. all rights reserved. 3 3 - - 1 1 . .
technical note 14/57 bu9414fv www.rohm.com 2012.03 - rev. a ? 2012 rohm co., ltd. all rights reserved. 4. ?
technical note 15/57 bu9414fv www.rohm.com 2012.03 - rev. a ? 2012 rohm co., ltd. all rights reserved. 4 4 - - 2 2 . .
technical note 16/57 bu9414fv www.rohm.com 2012.03 - rev. a ? 2012 rohm co., ltd. all rights reserved. 4 4 - - 4 4 . . ? ?
technical note 17/57 bu9414fv www.rohm.com 2012.03 - rev. a ? 2012 rohm co., ltd. all rights reserved. setting of k p2v_k sets the slop of d range. it sets the p2v_max = ?1eh?
technical note 18/57 bu9414fv www.rohm.com 2012.03 - rev. a ? 2012 rohm co., ltd. all rights reserved. setting 1 of attack detection time a_time is the setting of the initiation of p 2 volume function?s tran sition operation. if output level at the time of transiting to (2) 0 0.5ms 1.5ms 2ms command a_time 1 1ms 2 3 5ms 6ms command 4 5 3ms 4ms 6 7 a_time 0 50ms 150ms 200ms command r_time 1 100ms 2 3 500ms 600ms command 4 5 300ms 400ms 6 7 r_time input v i time t output v o time t v omax field (2) field (2) field (3) the time from exceeding the attack operation detection level v max till the attack operation ' s transition to field (3) is completed the time from falling below the recovery operation detection level v max till the recovery operation ' s transition to field (2) is completed
technical note 19/57 bu9414fv www.rohm.com 2012.03 - rev. a ? 2012 rohm co., ltd. all rights reserved. setting 2 of the transition time at the time of attack a_rate_low is the setting of trans ition time when the state of p 2 volume function is transited to (2) input v i tme t output v o time t field (1) field (1) field (2) attack operation a_rate_low r_rate_low the time from exceeding the attack operation detection level v imin till the attack operation ' s transition to field (1) is completed the time from falling below the recovery operation detection level v imin till the recovery operation ' s transition to field (2) is completed v imin v omin 0 1ms 3ms 4ms command a_rate_low time 1 2ms 2 3 20ms 40ms command 4 5 5ms 10ms 6 7 a_rate_low time 0 1ms 3ms 4ms command r_rate_low time 1 2ms 2 3 20ms 40ms command 4 5 5ms 10ms 6 7 r_rate_low time 0 50ms 150ms 200ms command a_time_low 1 100ms 2 3 500ms 600ms command 4 5 300ms 400ms 6 7 a_time_low
technical note 20/57 bu9414fv www.rohm.com 2012.03 - rev. a ? 2012 rohm co., ltd. all rights reserved. setting 3 of attack recovery detection time r_time_low is the setting of the initiation of p 2 volume function?s transition operation. if the input level above a continues more than continuation r_time_low in the st ate of (1), state transiti on of p2volume will be started toward the state of (2) or (3). default = 0 select address operational explanation &h3b [ 6:4 ]
technical note 21/57 bu9414fv www.rohm.com 2012.03 - rev. a ? 2012 rohm co., ltd. all rights reserved. setting of operating level of scene change detection function operation is started by t he difference between the pres ently detected value and the la st value as a standard. default = 0 select address operational explanation &h3c [ 2:0 ] 0 over 1.002 over 0.502 over 0.355 command detection level 1 over 0.709 2 3 over 0.126 over 0.089 command 4 5 over 0.251 over 0.178 6 7 detection level
technical note 22/57 bu9414fv www.rohm.com 2012.03 - rev. a ? 2012 rohm co., ltd. all rights reserved. 4-5. lch rch + + l-r - phase shifter effect gain lpf + + - + rch lch + loop 00 d b command gain 1 2 3 4 5 6 7 command gain -2db -3db -1db -6db -7db -4db -5db 8 9 a b c d e f -10db -11db -8db -9db -14db -15db -12db -13db
technical note 23/57 bu9414fv www.rohm.com 2012.03 - rev. a ? 2012 rohm co., ltd. all rights reserved. 4-6.
technical note 24/57 bu9414fv www.rohm.com 2012.03 - rev. a ? 2012 rohm co., ltd. all rights reserved. setting of the start of transmitting to coefficient ram in the case of using the smooth transition, it is transmitted to the coefficient ram for smooth transition. in the case of not using of the smooth transition, it is transmitted directly to the coefficient ram. default = 0 select address value o perational explanation &h40 [ 0 ] 0 bass coefficient transmission stop 1 bass coefficient transmission start selection of frequency command frequency 00 01 02 03 04 05 06 07 command 25hz 28hz 20hz 22hz 40hz 45hz 32hz 35hz 08 09 0a 0b 0c 0d 0e 0f 63hz 70hz 50hz 56hz 100hz 110hz 80hz 90hz frequency command frequency 10 11 12 13 14 15 16 17 command 160hz 180hz 125hz 140hz 250hz 280hz 200hz 220hz 18 19 1a 1b 1c 1d 1e 1f 400hz 450hz 315hz 350hz 630hz 700hz 500hz 560hz frequency command frequency 20 21 22 23 24 25 26 27 command 1khz 1.1khz 800hz 900hz 1.6khz 1.8khz 1.25khz 1.4khz 28 29 2a 2b 2c 2d 2e 2f 2.5khz 2.8khz 2khz 2.2khz 4khz 4.5khz 3.15khz 3.5khz frequency command frequency 30 31 32 33 34 35 36 37 command 6.3khz 7khz 5khz 5.6khz 10khz 11khz 8khz 9khz 38 39 3a 3b 3c 3d 3e 3f 16khz 18khz 12.5khz 14khz - - 20khz - frequency 0.56 0.75 command quality factor 0 1 4 5 6 7 0.33 0.43 1.0 1.2 1.5 1.8 2 3 3.3 3.9 command 8 9 c d e f 2.2 2.7 4.7 5.6 6.8 8.2 a b quality factor -0.5db 0db command gain 41 64 +0.5db +18db 3f 40 3e -1db 1c -18db +1db 42
technical note 25/57 bu9414fv www.rohm.com 2012.03 - rev. a ? 2012 rohm co., ltd. all rights reserved. 4-7.
technical note 26/57 bu9414fv www.rohm.com 2012.03 - rev. a ? 2012 rohm co., ltd. all rights reserved. selection of frequency command frequency 00 01 02 03 04 05 06 07 command 25hz 28hz 20hz 22hz 40hz 45hz 32hz 35hz 08 09 0a 0b 0c 0d 0e 0f 63hz 70hz 50hz 56hz 100hz 110hz 80hz 90hz frequency command frequency 10 11 12 13 14 15 16 17 command 160hz 180hz 125hz 140hz 250hz 280hz 200hz 220hz 18 19 1a 1b 1c 1d 1e 1f 400hz 450hz 315hz 350hz 630hz 700hz 500hz 560hz frequency command frequency 20 21 22 23 24 25 26 27 command 1khz 1.1khz 800hz 900hz 1.6khz 1.8khz 1.25khz 1.4khz 28 29 2a 2b 2c 2d 2e 2f 2.5khz 2.8khz 2khz 2.2khz 4khz 4.5khz 3.15khz 3.5khz frequency command frequency 30 31 32 33 34 35 36 37 command 6.3khz 7khz 5khz 5.6khz 10khz 11khz 8khz 9khz 38 39 3a 3b 3c 3d 3e 3f 16khz 18khz 12.5khz 14khz - - 20khz - frequency 0.56 0.75 command quality factor 0 1 4 5 6 7 0.33 0.43 1.0 1.2 1.5 1.8 2 3 3.3 3.9 command 8 9 c d e f 2.2 2.7 4.7 5.6 6.8 8.2 a b quality factor -0.5db 0db command gain 41 64 +0.5db +18db 3f 40 3e -1db 1c -18db +1db 42
technical note 27/57 bu9414fv www.rohm.com 2012.03 - rev. a ? 2012 rohm co., ltd. all rights reserved. 4-8.
technical note 28/57 bu9414fv www.rohm.com 2012.03 - rev. a ? 2012 rohm co., ltd. all rights reserved. setting of the start of transmitting to coefficient ram in the case of using the smooth transition, it is transmitted to the coefficient ram for smooth transition. in the case of not using of the smooth transition, it is tr ansmitted to the direct coefficient ram. default = 0 select address value o perational explanation &h48 [ 0 ] 0 treble coefficient transmission stop 1 treble coefficient transmission start selection of frequency command frequency 00 01 02 03 04 05 06 07 command 25hz 28hz 20hz 22hz 40hz 45hz 32hz 35hz 08 09 0a 0b 0c 0d 0e 0f 63hz 70hz 50hz 56hz 100hz 110hz 80hz 90hz frequency command frequency 10 11 12 13 14 15 16 17 command 160hz 180hz 125hz 140hz 250hz 280hz 200hz 220hz 18 19 1a 1b 1c 1d 1e 1f 400hz 450hz 315hz 350hz 630hz 700hz 500hz 560hz frequency command frequency 20 21 22 23 24 25 26 27 command 1khz 1.1khz 800hz 900hz 1.6khz 1.8khz 1.25khz 1.4khz 28 29 2a 2b 2c 2d 2e 2f 2.5khz 2.8khz 2khz 2.2khz 4khz 4.5khz 3.15khz 3.5khz frequency command frequency 30 31 32 33 34 35 36 37 command 6.3khz 7khz 5khz 5.6khz 10khz 11khz 8khz 9khz 38 39 3a 3b 3c 3d 3e 3f 16khz 18khz 12.5khz 14khz - - 20khz - frequency 0.56 0.75 command quality factor 0 1 4 5 6 7 0.33 0.43 1.0 1.2 1.5 1.8 2 3 3.3 3.9 command 8 9 c d e f 2.2 2.7 4.7 5.6 6.8 8.2 a b quality factor -0.5db 0db command gain 41 64 +0.5db +18db 3f 40 3e -1db 1c -18db +1db 42
technical note 29/57 bu9414fv www.rohm.com 2012.03 - rev. a ? 2012 rohm co., ltd. all rights reserved. 4-9. p 2 bass p 2 bass gain f hpf??? lpf??? ?`?
technical note 30/57 bu9414fv www.rohm.com 2012.03 - rev. a ? 2012 rohm co., ltd. all rights reserved. setting of p 2 bass deep bass gain default = 00h select address operational explanation &h74 [ 7 0 0db +2db +3db command gain 1 4 5 6 7 +1db +4db +5db +6db +7db 2 3 +10db +11db command 8 9 c d e f +8db +9db +12db +13db +14db +15db a b gain
technical note 31/57 bu9414fv www.rohm.com 2012.03 - rev. a ? 2012 rohm co., ltd. all rights reserved. 4-10. pseudo bass out hpf a super-low-pass component is intercepted.ex. f l =40hz a fundamental-wave component is extracted.ex. f h =120hz the generated noise signal is operated orthopedically.ex. f c =240hz lpf1 lpf2 lpf2 multiple sound (even number) generator multiple sound (odd number) generator in 0 off 30hz 40hz command frequency 1 20hz 2 3 70hz 80hz command 4 5 50hz 60hz 6 7 frequency
technical note 32/57 bu9414fv www.rohm.com 2012.03 - rev. a ? 2012 rohm co., ltd. all rights reserved. setting of pseudo bass input lpf default = 00h select address operational explanation &h7c [ 6 0 40hz 80hz 100hz command frequency 1 60hz 2 3 160hz 180hz command 4 5 120hz 140hz 6 7 frequency 0 80hz 120hz 140hz command frequency 1 4 5 6 7 100hz 160hz 180hz 200hz 220hz 2 3 280hz 300hz command 8 9 c d e f 240hz 260hz 320hz 340hz 360hz 380hz a b frequency 0 0db 2db 3db command gain 1 4 5 6 7 1db 4db 5db 6db 7db 2 3 10db 11db command 8 9 c d e f 8db 9db 12db 13db 14db 15db a b gain 0 -6db -4db -3db command gain 1 4 5 6 7 -5db -2db -1db 0db 1db 2 3 4db 5db command 8 9 c d e f 2db 3db 6db - - - a b gain 0 - -10b -8db command gain 1 -12db 2 3 -2db 0db command 4 5 -6db -4db 6 7 gain
technical note 33/57 bu9414fv www.rohm.com 2012.03 - rev. a ? 2012 rohm co., ltd. all rights reserved. 4-11. ? ? 0 0db +2db +3db command gain 1 4 5 6 7 +1db +4db +5db +6db +7db 2 3 +10db +11db command 8 9 c d e f +8db +9db +12db +13db +14db +15db a b gain
technical note 34/57 bu9414fv www.rohm.com 2012.03 - rev. a ? 2012 rohm co., ltd. all rights reserved. 4-12. ? f band1 band2 band3 band4 band5 band6 band7 level 18db (0.5db step) 63 160 400 1k 2.5k 6.3k 16k (hz) 01 +23.5db 0db -0.5db command gain 00 32 fe ff +24db -1db -103db - 30 31
technical note 35/57 bu9414fv www.rohm.com 2012.03 - rev. a ? 2012 rohm co., ltd. all rights reserved. selection of frequency command frequency 00 01 02 03 04 05 06 07 command 25hz 28hz 20hz 22hz 40hz 45hz 32hz 35hz 08 09 0a 0b 0c 0d 0e 0f 63hz 70hz 50hz 56hz 100hz 110hz 80hz 90hz frequency command frequency 10 11 12 13 14 15 16 17 command 160hz 180hz 125hz 140hz 250hz 280hz 200hz 220hz 18 19 1a 1b 1c 1d 1e 1f 400hz 450hz 315hz 350hz 630hz 700hz 500hz 560hz frequency command frequency 20 21 22 23 24 25 26 27 command 1khz 1.1khz 800hz 900hz 1.6khz 1.8khz 1.25khz 1.4khz 28 29 2a 2b 2c 2d 2e 2f 2.5khz 2.8khz 2khz 2.2khz 4khz 4.5khz 3.15khz 3.5khz frequency command frequency 30 31 32 33 34 35 36 37 command 6.3khz 7khz 5khz 5.6khz 10khz 11khz 8khz 9khz 38 39 3a 3b 3c 3d 3e 3f 16khz 18khz 12.5khz 14khz - - 20khz - frequency 0.56 0.75 command quality factor 0 1 4 5 6 7 0.33 0.43 1.0 1.2 1.5 1.8 2 3 3.3 3.9 command 8 9 c d e f 2.2 2.7 4.7 5.6 6.8 8.2 a b quality factor -0.5db 0db command gain 41 64 +0.5db +18db 3f 40 3e -1db 1c -18db +1db 42
technical note 36/57 bu9414fv www.rohm.com 2012.03 - rev. a ? 2012 rohm co., ltd. all rights reserved. 4-14. 01 +23.5db 0db -0.5db command gain 00 32 fe ff +24db -1db -103db - 30 31 -1db 0db 7e 0db - ff 0db - 0db -126db 0db 0db 0db 0db 0db 0db -1db -126db 80 7f 01 81 command lch 00 fe rch 01 +23.5db 0db -0.5db command gain 00 32 fe ff +24db -1db -103db - 30 31
technical note 37/57 bu9414fv www.rohm.com 2012.03 - rev. a ? 2012 rohm co., ltd. all rights reserved. 4-17. min a_rate r_rate input output max in out det middle and treble frequency component is extracted. lpf1 det lpf2 bass and middle frequency component is extracted.
technical note 38/57 bu9414fv www.rohm.com 2012.03 - rev. a ? 2012 rohm co., ltd. all rights reserved. on/off high frequency drc . default = 0 select address value o perational explanation &h18 [ 6 ] 0 use high frequency drc 1 not use high frequency drc setting of lpf(lpf2) . default = 0 select address value o perational explanation &h19 [ 5:4 ] 0 off 1 1st order 2 2nd order setting of lpf(lpf1) . default = 00h select address operational explanation &h19 [ 3 0 ` 400hz 600hz command frequency 1 4 5 6 7 200hz 800hz 1000hz 1200hz 1400hz 2 3 2000hz - command 8 9 c d e f 1600hz 1800hz - - - - a b frequency 0 1ms 3ms 4ms command time 1 2ms 2 3 20ms 40ms command 4 5 5ms 10ms 6 7 time 0 0.25s 0.75s 1s command r_rate 1 4 5 6 7 0.5s 1.25s 1.5s 2s 2.5s 2 3 5s 6s command 8 9 c d e f 3s 4s 7s 8s 9s 10s a b r_rate
technical note 39/57 bu9414fv www.rohm.com 2012.03 - rev. a ? 2012 rohm co., ltd. all rights reserved. setting of low frequency a_time. default = 0h select address operational explanation &h1b [ 6 0 0.5ms 1.5ms 2ms command a_time 1 1ms 2 3 5ms 6ms command 4 5 3ms 4ms 6 7 a_time 0 50ms 150ms 200ms command r_time 1 100ms 2 3 500ms 600ms command 4 5 300ms 400ms 6 7 r_time
technical note 40/57 bu9414fv www.rohm.com 2012.03 - rev. a ? 2012 rohm co., ltd. all rights reserved. setting of high frequency a_rate. default = 0h select address operational explanation &h1c [ 6 0 1ms 3ms 4ms command time 1 2ms 2 3 20ms 40ms command 4 5 5ms 10ms 6 7 time 0 0.25s 0.75s 1s command r_rate 1 4 5 6 7 0.5s 1.25s 1.5s 2s 2.5s 2 3 5s 6s command 8 9 c d e f 3s 4s 7s 8s 9s 10s a b r_rate 0 0.5ms 1.5ms 2ms command a_time 1 1ms 2 3 5ms 6ms command 4 5 3ms 4ms 6 7 a_time 0 50ms 150ms 200ms command r_time 1 100ms 2 3 500ms 600ms command 4 5 300ms 400ms 6 7 r_time
technical note 41/57 bu9414fv www.rohm.com 2012.03 - rev. a ? 2012 rohm co., ltd. all rights reserved. 4-18. 23 22 21 20 19 18 17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0 1 0111 1111111111111111111 0 1000 0000000000000000000 clip_level[15:0] ~clip_level[15:0] 0000000 1111111 0 1 maximum value minimum value a positive clip level a negative clip level clip level
technical note 42/57 bu9414fv www.rohm.com 2012.03 - rev. a ? 2012 rohm co., ltd. all rights reserved. 4-20. 01 +23.5db 0db -0.5db command gain 00 32 fe ff +24db -1db -103db - 30 31 -1db 0db 7e 0db - ff 0db - 0db -126db 0db 0db 0db 0db 0db 0db -1db -126db 80 7f 01 81 command lch 00 fe rch 01 +23.5db 0db -0.5db command gain 00 32 fe ff +24db -1db -103db - 30 31
technical note 43/57 bu9414fv www.rohm.com 2012.03 - rev. a ? 2012 rohm co., ltd. all rights reserved. 4-26. 23 22 21 20 19 18 17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0 1 0111 1111111111111111111 0 1000 0000000000000000000 clip_level[15:0] ~clip_level[15:0] 0000000 1111111 0 1 maximum value minimum value a positive clip level a negative clip level clip level
technical note 44/57 bu9414fv www.rohm.com 2012.03 - rev. a ? 2012 rohm co., ltd. all rights reserved. 4-27. ? z -1 z -1 a1 b1 b0 z -1 z -1 a2 b2 coefficient number 14 h. 15 h. 16 h. 17 h 18 h band1 (main) z -1 z -1 a1 b1 b0 z -1 z -1 a2 b2 coefficient number 19 h. 1a h. 1b h . 1c h 1d h z -1 z -1 a1 b1 b0 z -1 z -1 a2 b2 coefficient number 1e h. 1f h. 20 h. 21 h 22 h z -1 z -1 a1 b1 b0 z -1 z -1 a2 b2 coefficient number 23 h. 24 h. 25 h. 26 h 27 h z -1 z -1 a1 b1 b0 z -1 z -1 a2 b2 coefficient number 28 h. 29 h. 2a h . 2b h 2c h z -1 z -1 a1 b1 b0 z -1 z -1 a2 b2 coefficient number 2d h . 2e h. 2f h. 30 h 31 h z -1 z -1 a1 b1 b0 z -1 z -1 a2 b2 coefficient number 32 h . 33 h. 34 h. 35 h 36 h band2 (main) band3 (main) band4 (main) band5 (main) band6 (main) ban d7 (main) + + + + + + + + + + + + + + + + + + + + + + + + + + + + main output7band parametric eq z -1 z -1 a1 b1 b0 z -1 z -1 a2 b2 coefficient number 37 h . 38 h . 39 h . 3a h 3b h z -1 z -1 a1 b1 b0 z -1 z -1 a2 b2 coefficient number 3c h . 3d h . 3e h . 3f h 40 h z -1 z -1 a1 b1 b0 z -1 z -1 a2 b2 coefficient number 41 h . 42 h . 43 h . 44 h band1 (sub) band2 (sub) band3 (sub) + + + + + + + + + + + + sub output3band parametric eq 45 h
technical note 45/57 bu9414fv www.rohm.com 2012.03 - rev. a ? 2012 rohm co., ltd. all rights reserved. 4-28.
technical note 46/57 bu9414fv www.rohm.com 2012.03 - rev. a ? 2012 rohm co., ltd. all rights reserved. 5. p-s conversion 1 ,p-s conversion 2 two parallel serial conversion circuits are built in bu9414fv. (p-s conversion 1, p-s conversion 2) p-s conversion 1 convert the main outpu t of dsp from sdatao1, lrcko, and bcko (34,35,36pin) into three line serial data and output the data. p-s conversion 2 convert the sub output of dsp from sdatao1, lrcko, and bcko (33, 35,36pin) into three line serial data and output the data. output format has the iis mode, left-align mode, and right- align mode. 16 each bit, 20bit, and 24bit output can also be selected. the figure below shows the timing chart of each transmission mode. 5-1. format setting of three line serial output default = 0 select address value operating description p-s conversion 1 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 16bit 20bit 24bit 16bit 20bit 24bit lrcko bcko datao iis? 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 16bit 20bit 24bit 16bit 20bit 24bit lrcko bcko datao ?? 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 16bit 20bit 24bit lrcko bcko datao ?? 16bit 20bit 24bit msb lsb s msb lsb s msb lsb s msb lsb s msb lsb s msb lsb s
technical note 47/57 bu9414fv www.rohm.com 2012.03 - rev. a ? 2012 rohm co., ltd. all rights reserved. 6. mute function by command mute function by command is provided in bu9414fv. it's possible to mute dsp's main and sub digital output by setting to &hf4 [ 4 ] = 1h and mutex_dac terminal and a mutex_sp terminal both to l. setting the transition time of smooth mute mute the main and sub output of dsp. select the transition time of en tering from 0db to mute state. smooth transition time when releasing mute is about 22ms(fixed) . default = 0 select address value operating description &h10 [ 1
technical note 48/57 bu9414fv www.rohm.com 2012.03 - rev. a ? 2012 rohm co., ltd. all rights reserved. 8. command sent after releasing reset please send the following command after releasing reset including power supply on. 0. power supply turning on
technical note 49/57 bu9414fv www.rohm.com 2012.03 - rev. a ? 2012 rohm co., ltd. all rights reserved. 9. about frequency setting such as tone control and parametric equalizer because the sampling rate converter is not built into bu9414fv, the calculation clock of ds p is changed according to the input sampling rate of i2s. because sampling rate describes the frequency on the assumption of 48khz in this function specification, conversion is needed in case of sampling frequency of 44.1khz and 32khz. please refer to the table below for f0 setting of tone control (bass, middle, treble) and parametric equalizer. f 0 (fs=48khz) command frequency 00 01 02 03 04 05 06 07 command 25hz 28hz 20hz 22hz 40hz 45hz 32hz 35hz 08 09 0a 0b 0c 0d 0e 0f 63hz 70hz 50hz 56hz 100hz 110hz 80hz 90hz frequency command frequency 10 11 12 13 14 15 16 17 command 160hz 180hz 125hz 140hz 250hz 280hz 200hz 220hz 18 19 1a 1b 1c 1d 1e 1f 400hz 450hz 315hz 350hz 630hz 700hz 500hz 560hz frequency command frequency 20 21 22 23 24 25 26 27 command 1khz 1.1khz 800hz 900hz 1.6khz 1.8khz 1.25khz 1.4khz 28 29 2a 2b 2c 2d 2e 2f 2.5khz 2.8khz 2khz 2.2khz 4khz 4.5khz 3.15khz 3.5khz frequency command frequency 30 31 32 33 34 35 36 37 command 6.3khz 7khz 5khz 5.6khz 10khz 11khz 8khz 9khz 38 39 3a 3b 3c 3d 3e 3f 16khz 18khz 12.5khz 14khz - - 20khz - frequency f 0 (fs=44.1khz) command frequency 00 01 02 03 04 05 06 07 command 23hz 26hz 18hz 20hz 37hz 41hz 29hz 32hz 08 09 0a 0b 0c 0d 0e 0f 58hz 64hz 46hz 51hz 92hz 101hz 74hz 83hz frequency command frequency 10 11 12 13 14 15 16 17 command 147hz 165hz 115hz 129hz 230hz 257hz 184hz 202hz 18 19 1a 1b 1c 1d 1e 1f 368hz 413hz 289hz 322hz 579hz 643hz 459hz 515hz frequency command frequency 20 21 22 23 24 25 26 27 command 919hz 1.01khz 735hz 827hz 1.47khz 1.65khz 1.15khz 1.29khz 28 29 2a 2b 2c 2d 2e 2f 2.3khz 2.57khz 1.84khz 2.02khz 3.68khz 4.13khz 2.89khz 3.22khz frequency command frequency 30 31 32 33 34 35 36 37 command 5.79khz 6.43khz 4.59khz 5.15khz 9.19khz 10.1khz 7.35khz 8.27khz 38 39 3a 3b 3c 3d 3e 3f 14.7khz 16.5khz 11.5khz 12.9khz - - 18.4khz - frequency f 0 (fs=32khz) command frequency 00 01 02 03 04 05 06 07 command 17hz 19hz 13hz 15hz 27hz 30hz 21hz 23hz 08 09 0a 0b 0c 0d 0e 0f 42hz 47hz 33hz 37hz 67hz 73hz 53hz 60hz frequency command frequency 10 11 12 13 14 15 16 17 command 107hz 120hz 83hz 93hz 167hz 187hz 133hz 147hz 18 19 1a 1b 1c 1d 1e 1f 267hz 300hz 210hz 233hz 420hz 467hz 333hz 373hz frequency command frequency 20 21 22 23 24 25 26 27 command 667hz 733hz 533hz 600hz 1.07khz 1.2khz 833hz 933hz 28 29 2a 2b 2c 2d 2e 2f 1.67khz 1.87khz 1.33khz 1.47khz 2.67khz 3khz 2.1khz 2.33khz frequency command frequency 30 31 32 33 34 35 36 37 command 4.2khz 4.67khz 3.33khz 3.73khz 6.67khz 7.33khz 5.33khz 6khz 38 39 3a 3b 3c 3d 3e 3f 10.7khz 12khz 8.33khz 9.33khz - - 13.3khz - frequency
technical note 50/57 bu9414fv www.rohm.com 2012.03 - rev. a ? 2012 rohm co., ltd. all rights reserved. 10. about a setup of a clock, and the input of a command the input of mclk is decided by combi nation of three kinds of sampling rates (fs=32khz, 44.1khz, 48khz), and three kinds of magnifications (128 times, 256 times, 512 times). sampling i2c mclk bu9414fv clock line s e l 1 control logic div error_det plla pll_div dsp audio if s e l 2 sysclko &hf3[5:0] &h08[5:4]
technical note 51/57 bu9414fv www.rohm.com 2012.03 - rev. a ? 2012 rohm co., ltd. all rights reserved. 11. about the change of a sampling rate 11-1.
technical note 52/57 bu9414fv www.rohm.com 2012.03 - rev. a ? 2012 rohm co., ltd. all rights reserved. 11-3.
technical note 53/57 bu9414fv www.rohm.com 2012.03 - rev. a ? 2012 rohm co., ltd. all rights reserved. 12. when the clock which exceeded the specification range from mclk is inputted when the frequency beyond fs=48khz is inputted from mclk in the state where it was set as &h08 [5:4] =1, since pll follows inputted mclk, as shown in the right figure, when it exceeds time ter, it will exceed the frequency in which dsp can operate. in this case, an allophone may carry out irrespective of the existence of data. when you change into such a state, please carry out the mute of the dac immediately, apply reset (resetb=l), and do the work after reset release of chapter 8. the time of ter serves as about 70 usec. the frequency limit that dsp can operate 48khz mclk inputted frequency pll output frequency frequency ter time
technical note 54/57 bu9414fv www.rohm.com 2012.03 - rev. a ? 2012 rohm co., ltd. all rights reserved. 13. audio interface signal specification mclk 1/mclk lrck 1/flrck bck tbck lrck bck tsu;sd sdata1,sdata2 tblrdg tbckh tbckl tlbrdg thd;sd
technical note 55/57 bu9414fv www.rohm.com 2012.03 - rev. a ? 2012 rohm co., ltd. all rights reserved. 14. notes at the time of reset since the state of ic is not decided, please make it into reset x=l at the time of a power supply injection, and surely apply reset.
technical note 56/57 bu9414fv www.rohm.com 2012.03 - rev. a ? 2012 rohm co., ltd. all rights reserved.
technical note 57/57 bu9414fv www.rohm.com 2012.03 - rev. a ? 2012 rohm co., ltd. all rights reserved. (unit : mm) ssop-b40 0.08 m 0.1 s 0.22 0.1 0.65 0.15 0.1 0.5 0.2 7.8 0.3 5.4 0.2 1.8 0.1 0.1 1 40 20 21 13.6 0.2 (max 13.95 include burr) ? order quantity needs to be multiple of the minimum quantity. embossed carrier tape tape quantity direction of feed the direction is the 1pin of product is at the upper left when you hold reel on the left hand and you pull out the tape on the right hand 2000pcs e2 () direction of feed reel 1pin bu9414f lot no.
datasheet d a t a s h e e t notice - ge rev.002 ? 2014 rohm co., ltd. all rights reserved. notice precaution on using rohm products 1. our products are designed and manufac tured for application in ordinary elec tronic equipments (such as av equipment, oa equipment, telecommunication equipment, home electroni c appliances, amusement equipment, etc.). if you intend to use our products in devices requiring ex tremely high reliability (such as medical equipment (note 1) , transport equipment, traffic equipment, aircraft/spacecra ft, nuclear power controllers, fuel c ontrollers, car equipment including car accessories, safety devices, etc.) and whose malfunction or failure may cause loss of human life, bodily injury or serious damage to property (?specific applications?), please consult with the rohm sale s representative in advance. unless otherwise agreed in writing by rohm in advance, ro hm shall not be in any way responsible or liable for any damages, expenses or losses incurred by you or third parties arising from the use of any ro hm?s products for specific applications. (note1) medical equipment classification of the specific applications japan usa eu china class class class b class class class 2. rohm designs and manufactures its products subject to strict quality control system. however, semiconductor products can fail or malfunction at a certain rate. please be sure to implement, at your own responsibilities, adequate safety measures including but not limited to fail-safe desi gn against the physical injury, damage to any property, which a failure or malfunction of our products may cause. the following are examples of safety measures: [a] installation of protection circuits or other protective devices to improve system safety [b] installation of redundant circuits to reduce the impact of single or multiple circuit failure 3. our products are designed and manufactured for use under standard conditions and not under any special or extraordinary environments or conditio ns, as exemplified below. accordin gly, rohm shall not be in any way responsible or liable for any damages, expenses or losses arising from the use of an y rohm?s products under any special or extraordinary environments or conditions. if you intend to use our products under any special or extraordinary environments or conditions (as exemplified bel ow), your independent verification and confirmation of product performance, reliability, etc, prior to use, must be necessary: [a] use of our products in any types of liquid, incl uding water, oils, chemicals, and organic solvents [b] use of our products outdoors or in places where the products are exposed to direct sunlight or dust [c] use of our products in places where the products ar e exposed to sea wind or corrosive gases, including cl 2 , h 2 s, nh 3 , so 2 , and no 2 [d] use of our products in places where the products are exposed to static electricity or electromagnetic waves [e] use of our products in proximity to heat-producing components, plastic cords, or other flammable items [f] sealing or coating our products with resin or other coating materials [g] use of our products without cleaning residue of flux (ev en if you use no-clean type fluxes, cleaning residue of flux is recommended); or washing our products by using water or water-soluble cleaning agents for cleaning residue after soldering [h] use of the products in places subject to dew condensation 4. the products are not subjec t to radiation-proof design. 5. please verify and confirm characteristics of the final or mounted products in using the products. 6. in particular, if a transient load (a large amount of load applied in a short per iod of time, such as pulse. is applied, confirmation of performance characteristics after on-boar d mounting is strongly recomm ended. avoid applying power exceeding normal rated power; exceeding the power rating under steady-state loading c ondition may negatively affect product performance and reliability. 7. de-rate power dissipation (pd) depending on ambient temper ature (ta). when used in seal ed area, confirm the actual ambient temperature. 8. confirm that operation temperat ure is within the specified range descr ibed in the product specification. 9. rohm shall not be in any way responsible or liable for fa ilure induced under deviant condi tion from what is defined in this document. precaution for mounting / circuit board design 1. when a highly active halogenous (chlori ne, bromine, etc.) flux is used, the resi due of flux may negatively affect product performance and reliability. 2. in principle, the reflow soldering method must be used; if flow soldering met hod is preferred, please consult with the rohm representative in advance. for details, please refer to rohm mounting specification
datasheet d a t a s h e e t notice - ge rev.002 ? 2014 rohm co., ltd. all rights reserved. precautions regarding application examples and external circuits 1. if change is made to the constant of an external circuit, pl ease allow a sufficient margin c onsidering variations of the characteristics of the products and external components, including transient characteri stics, as well as static characteristics. 2. you agree that application notes, re ference designs, and associated data and in formation contained in this document are presented only as guidance for products use. theref ore, in case you use such information, you are solely responsible for it and you must exercise your own independent verification and judgment in the use of such information contained in this document. rohm shall not be in any way responsible or liable for any damages, expenses or losses incurred by you or third parties arising from the use of such information. precaution for electrostatic this product is electrostatic sensitive product, which may be damaged due to electrostatic discharge. please take proper caution in your manufacturing process and storage so that voltage exceeding t he products maximum rating will not be applied to products. please take special care under dry condit ion (e.g. grounding of human body / equipment / solder iron, isolation from charged objects, se tting of ionizer, friction prevention and temperature / humidity control). precaution for storage / transportation 1. product performance and soldered connections may deteriora te if the products are stor ed in the places where: [a] the products are exposed to sea winds or corros ive gases, including cl2, h2s, nh3, so2, and no2 [b] the temperature or humidity exceeds those recommended by rohm [c] the products are exposed to di rect sunshine or condensation [d] the products are exposed to high electrostatic 2. even under rohm recommended storage c ondition, solderability of products out of recommended storage time period may be degraded. it is strongly recommended to confirm sol derability before using products of which storage time is exceeding the recommended storage time period. 3. store / transport cartons in the co rrect direction, which is indicated on a carton with a symbol. otherwise bent leads may occur due to excessive stress applied when dropping of a carton. 4. use products within the specified time after opening a hum idity barrier bag. baking is required before using products of which storage time is exceeding the recommended storage time period. precaution for product label qr code printed on rohm products label is for rohm?s internal use only. precaution for disposition when disposing products please dispose them proper ly using an authorized industry waste company. precaution for foreign exchange and foreign trade act since our products might fall under cont rolled goods prescribed by the applicable foreign exchange and foreign trade act, please consult with rohm representative in case of export. precaution regarding intellectual property rights 1. all information and data including but not limited to application example contain ed in this document is for reference only. rohm does not warrant that foregoi ng information or data will not infringe any intellectual property rights or any other rights of any third party regarding such information or data. rohm shall not be in any way responsible or liable for infringement of any intellectual property rights or ot her damages arising from use of such information or data.: 2. no license, expressly or implied, is granted hereby under any intellectual property rights or other rights of rohm or any third parties with respect to the information contained in this document. other precaution 1. this document may not be reprinted or reproduced, in whol e or in part, without prior written consent of rohm. 2. the products may not be disassembled, converted, modified, reproduced or otherwise changed without prior written consent of rohm. 3. in no event shall you use in any wa y whatsoever the products and the related technical information contained in the products or this document for any military purposes, incl uding but not limited to, the development of mass-destruction weapons. 4. the proper names of companies or products described in this document are trademarks or registered trademarks of rohm, its affiliated companies or third parties.
datasheet datasheet notice ? we rev.001 ? 2014 rohm co., ltd. all rights reserved. general precaution 1. before you use our pro ducts, you are requested to care fully read this document and fully understand its contents. rohm shall n ot be in an y way responsible or liabl e for fa ilure, malfunction or acci dent arising from the use of a ny rohms products against warning, caution or note contained in this document. 2. all information contained in this docume nt is current as of the issuing date and subj ec t to change without any prior notice. before purchasing or using rohms products, please confirm the la test information with a rohm sale s representative. 3. the information contained in this doc ument is provi ded on an as is basis and rohm does not warrant that all information contained in this document is accurate an d/or error-free. rohm shall not be in an y way responsible or liable for an y damages, expenses or losses incurred b y you or third parties resulting from inaccur acy or errors of or concerning such information.
datasheet part number bu9414fv package ssop-b40 unit quantity 2000 minimum package quantity 2000 packing type taping constitution materials list inquiry rohs yes bu9414fv - web page distribution inventory

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